C
C There are a total of 8 entries in the algebraic variable array.
C There are a total of 3 entries in each of the rate and state variable arrays.
C There are a total of 8 entries in the constant variable array.
C
C
C VOI is t in component environment (second).
C CONSTS(1) is R in component environment (J_per_K_per_mol).
C CONSTS(2) is T in component environment (kelvin).
C CONSTS(3) is F in component environment (C_per_mol).
C CONSTS(4) is C_m in component environment (fF).
C STATES(1) is q_K_o in component environment (fmol).
C STATES(2) is q_K_i in component environment (fmol).
C ALGBRC(7) is v_K_ATP in component K_ATP (fmol_per_sec).
C STATES(3) is q_mem in component environment (fC).
C ALGBRC(8) is I_mem_K_ATP in component K_ATP (fA).
C CONSTS(5) is kappa_K_ATP in component K_ATP_parameters (fmol_per_sec).
C CONSTS(6) is K_K_i in component K_ATP_parameters (per_fmol).
C CONSTS(7) is K_K_o in component K_ATP_parameters (per_fmol).
C CONSTS(8) is zK in component K_ATP_parameters (dimensionless).
C ALGBRC(2) is mu_K_o in component K_ATP (J_per_mol).
C ALGBRC(3) is mu_K_i in component K_ATP (J_per_mol).
C ALGBRC(5) is Am_K_ATP in component K_ATP (J_per_mol).
C ALGBRC(4) is Af_K_ATP in component K_ATP (J_per_mol).
C ALGBRC(6) is Ar_K_ATP in component K_ATP (J_per_mol).
C ALGBRC(1) is V_mem in component K_ATP (volt).
C RATES(1) is d/dt q_K_o in component environment (fmol).
C RATES(2) is d/dt q_K_i in component environment (fmol).
C RATES(3) is d/dt q_mem in component environment (fC).
C
      SUBROUTINE initConsts(CONSTS, RATES, STATES)
      REAL CONSTS(*), RATES(*), STATES(*)
      CONSTS(1) = 8.314
      CONSTS(2) = 310
      CONSTS(3) = 96485
      CONSTS(4) = 153400
      STATES(1) = 27.9828
      STATES(2) = 5510
      STATES(3) = -13039
      CONSTS(5) = 1.1812e-05
      CONSTS(6) = 9.99086e-05
      CONSTS(7) = 0.000663229
      CONSTS(8) = 1
      RETURN
      END
      SUBROUTINE computeRates(VOI, CONSTS,  RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      ALGBRC(1) = STATES(3)/CONSTS(4)
      ALGBRC(5) =  CONSTS(8)*CONSTS(3)*ALGBRC(1)
      ALGBRC(3) =  CONSTS(1)*CONSTS(2)*log( CONSTS(6)*STATES(2))
      ALGBRC(4) = ALGBRC(3)+ CONSTS(8)*CONSTS(3)*ALGBRC(1)
      ALGBRC(2) =  CONSTS(1)*CONSTS(2)*log( CONSTS(7)*STATES(1))
      ALGBRC(6) = ALGBRC(2)
      ALGBRC(7) = TERNRY(ALGBRC(5).EQ.0.00000,  CONSTS(5)*(EXP(ALGBRC(4)/( CONSTS(1)*CONSTS(2))) - EXP(ALGBRC(6)/( CONSTS(1)*CONSTS(2)))),  ((( CONSTS(5)*ALGBRC(5))/( CONSTS(1)*CONSTS(2)))/(EXP(ALGBRC(5)/( CONSTS(1)*CONSTS(2))) - 1.00000))*(EXP(ALGBRC(4)/( CONSTS(1)*CONSTS(2))) - EXP(ALGBRC(6)/( CONSTS(1)*CONSTS(2)))))
      RATES(1) = ALGBRC(7)
      RATES(2) = - ALGBRC(7)
      ALGBRC(8) =  CONSTS(3)*- CONSTS(8)*ALGBRC(7)
      RATES(3) = ALGBRC(8)
      RETURN
      END
      SUBROUTINE computeVariables(VOI, CONSTS, RATES, STATES, ALGBRC)
      REAL VOI, CONSTS(*), RATES(*), STATES(*), ALGBRC(*)
      ALGBRC(1) = STATES(3)/CONSTS(4)
      ALGBRC(5) =  CONSTS(8)*CONSTS(3)*ALGBRC(1)
      ALGBRC(3) =  CONSTS(1)*CONSTS(2)*log( CONSTS(6)*STATES(2))
      ALGBRC(4) = ALGBRC(3)+ CONSTS(8)*CONSTS(3)*ALGBRC(1)
      ALGBRC(2) =  CONSTS(1)*CONSTS(2)*log( CONSTS(7)*STATES(1))
      ALGBRC(6) = ALGBRC(2)
      ALGBRC(7) = TERNRY(ALGBRC(5).EQ.0.00000,  CONSTS(5)*(EXP(ALGBRC(4)/( CONSTS(1)*CONSTS(2))) - EXP(ALGBRC(6)/( CONSTS(1)*CONSTS(2)))),  ((( CONSTS(5)*ALGBRC(5))/( CONSTS(1)*CONSTS(2)))/(EXP(ALGBRC(5)/( CONSTS(1)*CONSTS(2))) - 1.00000))*(EXP(ALGBRC(4)/( CONSTS(1)*CONSTS(2))) - EXP(ALGBRC(6)/( CONSTS(1)*CONSTS(2)))))
      ALGBRC(8) =  CONSTS(3)*- CONSTS(8)*ALGBRC(7)
      RETURN
      END
      REAL FUNCTION TERNRY(TEST, VALA, VALB)
      LOGICAL TEST
      REAL VALA, VALB
      IF (TEST) THEN
        TERNRY = VALA
      ELSE
        TERNRY = VALB
      ENDIF
      RETURN
      END